virtual LAN (VLAN or Logical LAN or Virtual Local Area Network)
A virtual (or logical) LAN is a local area network with a definition that maps workstations on
some other basis than geographic location (for example, by department, type of user, or primary
application). The virtual LAN controller can change or add workstations and manage loadbalancing
and bandwidth allocation more easily than with a physical picture of the LAN. Network management
software keeps track of relating the virtual picture of the local area network with the actual
physical picture.
VLANs are considered likely to be used with campus environment
networks. Among companies likely to provide products with VLAN support are Cisco, Bay Networks, and
3Com.
There is a proposed VLAN standard, Institute of Electrical and Electronics Engineers 802.10.
This was last updated in June 2007
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